Probably the easiest way, would be to add the even 4 weeks that would lead to a month away, then add 1-3 days, depending on how many days are in each month, to find the exact week day.
Like: Thursday, April 1st → ____, May 1st
Thursday + 2 days (because 4x7=28, and there are 30 days in april) you’ll get:
Saturday, May 1st
I hope this helps and makes some sort of sense haha
Number 5 is 10 pencils left in total(5 red, 5 blue) with 50 percent probability of getting red or blue. Number 6 is 9 left total (4 red, 5 blue) with a 44 percent probability of choosing a red one, 56 percent probability of choosing a blue one